0
Proteins get denatured when acid is added and this forms a white coagulum which is slightly yellow in colour because of nitro- derivatives of proteins given by aromatic amino acids.
Read more: What_is_the_basis_of_Heller's_test_in_biochemistryget denatured when acid is added and this forms a white coagulum which is slightly yellow in colour because of nitro- derivatives of proteins given by aromatic amino acids.
What else can I help you with?
Why Schultz solution change from colourless to purple with the presence of cellulose?
The Schultz solution changes from colorless to purple in the presence of cellulose due to the formation of a complex between the dye in the solution and the hydroxyl groups present in cellulose. When cellulose is introduced, it interacts with the dye, resulting in a color change that indicates the presence of cellulose. This reaction is often used as a qualitative test for cellulose in various samples.
What is the chemical basis for a positive test in Molisch's test?
See this link.
What are the reagent use to identify the cellulose in an experiment?
In an experiment to identify cellulose, reagents such as iodine solution and sulfuric acid are commonly used. Iodine solution turns blue-black in the presence of cellulose, while sulfuric acid can break down cellulose into its constituent glucose monomers for further analysis.
Can you stain pleather?
It is possible to stain pleather, but it may not absorb the stain as well as real leather. Be sure to follow the manufacturer's instructions for the specific type of pleather you have, and test a small, inconspicuous area before applying the stain to the entire piece.
Why does the Schultze' solution turns purple when tested with cellulose?
Schultze's solution turns purple when tested with cellulose due to the presence of iodine in the solution, which forms a complex with the hydroxyl groups in cellulose. This interaction results in a characteristic color change, as the iodine molecules fit into the helical structure of the cellulose, producing a deep purple color. This reaction is commonly used as a qualitative test to confirm the presence of cellulose in various substances.
What is Perls test?
a test for hemosiderin, utilizing Perls Prussian blue stain.
Does cellulose test positive or negative with iodine solution?
Cellulose tests negative with iodine solution. Iodine is used to test for the presence of starch, which forms a blue-black complex with iodine. Since cellulose is a polysaccharide but not a starch, it does not react with iodine in this way and remains colorless.
What test may be used to determine if a stain is blood or not?
The most common test used to determine if a stain is blood is the Hemastix test. This test involves using a strip of paper coated with a chemical that changes color in the presence of blood. If the stain contains blood, the paper will turn green due to the presence of hemoglobin.
What is secondary stain?
A secondary stain is Methylene blue. This type of stain is used in a acid fast staining. This type of staining test can determine medical conditions such as tuberculosis.
Why Schultz solution change from colourless to purple with the presence of cellulose?
The Schultz solution changes from colorless to purple in the presence of cellulose due to the formation of a complex between the dye in the solution and the hydroxyl groups present in cellulose. When cellulose is introduced, it interacts with the dye, resulting in a color change that indicates the presence of cellulose. This reaction is often used as a qualitative test for cellulose in various samples.
What is the chemical basis for a positive test in Molisch's test?
See this link.
What is Congo Red?
Congo red is the sodium salt of benzidinediazo-bis-1-naphtylamine-4-sulfonic acid (formula: C32H22N6Na2O6S2). It is a secondary diazo dye. Congo red is water soluble, yielding a red colloidal solution; its solubility is better in organic solvents such as ethanol.It has a strong, though apparently non-covalent affinity to cellulose fibres. However, the use of Congo red in the cellulose industries (cotton textile, wood pulp & paper) has long been abandoned, mainly because of its toxicity.Conga Red is an acidic stain primarily used to stain bacterial cells to test for capsules. The Conga Red stain is used to stain a microscope slide background against the colorless cell. Then a basic stain like Maneval's Stain is used to stain the cell. The capsule surrounding some cells will repel the stains and appear colorless against a red (Conga Red) background. The cell inside the capsule will be stained light purple from the Maneval's Stain.
Which is an example of an intelligence test that would be administered on an individual basis?
The Wechsler Scale is an example of an intelligence test that would be administered on an individual basis.
What supreme court will uphold a law concerning a given group as long as the law is it reasonably related to a legitimate government interest?
Apex-type question, reworded to preserve answer
What are the reagent use to identify the cellulose in an experiment?
In an experiment to identify cellulose, reagents such as iodine solution and sulfuric acid are commonly used. Iodine solution turns blue-black in the presence of cellulose, while sulfuric acid can break down cellulose into its constituent glucose monomers for further analysis.
Can you stain pleather?
It is possible to stain pleather, but it may not absorb the stain as well as real leather. Be sure to follow the manufacturer's instructions for the specific type of pleather you have, and test a small, inconspicuous area before applying the stain to the entire piece.
How can I darken wood stain without stripping it?
To darken wood stain without stripping it, you can apply additional coats of a darker stain on top of the existing stain. This will deepen the color without removing the original stain. Make sure to test the new stain on a small, inconspicuous area first to ensure it achieves the desired shade.
